The hex color #40a111 is a dark color. The web-safe version is Hex
#339900. A complementary color is
#BF5EEE. The grayscale version is
#515151. A 20% lighter version of the original color is
#73D444, and Hex
#0D6E00 is the 20% darker color. If the color is saturated by 10%, you get
#3EA90B. If the color is desaturated by 10%, the color
#429917 is obtained.